75% of the world's TV households are digital

"Global digital penetration climbed from 40.4 per cent of TV households at end-2010 to 74.6 per cent by end-2015, according to the latest edition of the Digital TV World Databook. About 584 million digital TV homes were added in 138 countries between 2010 and 2015. This doubled the digital TV household total to 1,170 million.
From the 584 million digital homes added between 2010 and 2015, 156 million came from primary DTT [homes taking DTT but not subscribing to cable, satellite TV or IPTV]. Digital cable contributed a further 231 million. There were more pay IPTV additions (88 million) than pay satellite TV ones (67 million). However, there were still 398 million analog TV households (terrestrial and cable) by end-2015, although this was down from 863 million at end-2010.
From the digital TV households additions between 2010 and 2015, 381 million were in the Asia Pacific region; more than doubling its total to 608 million. China became the largest digital TV household nation in 2010, rising to 339 million digital TV homes (29 per cent of the world’s total) by end-2015.
The number of pay-TV households (analogue and digital) reached 907 million by 2015, up from 716 million in 2010. Asia Pacific increased by 126 million – or two-thirds of the global additions – during this period to bring its total to 520 million.
The number of global digital pay-TV subscribers doubled from 382 million in 2010 to 771 million in 2015.
China had the most pay-TV subs, at 264 million by end-2015 (up by 69 million on 2010). India added a further 32 million pay TV subs."

Source;  Advanced Television, 12th May 2016